Yesterday we shared with you New York City's most expensive apartment rentals, just in case you haven't been killed in the market these past few weeks (or maybe you won the Powerball a few weeks ago?) and have been looking to upgrade to a fantastic apartment without making a long-term commitment. Today we've rounded up the 20 most expensive apartments for sale in the city. Pick up an overpriced co-op on Park Avenue for $30 million and you'll sleep better at night knowing you played a key role in boosting the city's ailing economy! (At the very least, you'll know you paid for a few years of private school for some lucky real estate broker.) One note: This list only includes "official" listings, which means apartments that are only rumored to be for sale (such as Richard Ullman's $75 million penthouse at 15 CPW or Courtney Sale Ross' duplex at 740 Park) aren't represented. But there's plenty of overpriced property to choose from regardless!